<!DOCTYPE html>
<html>

<head>
  <title></title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="../bootstrap-5.1.3-dist/css/bootstrap.css" rel="stylesheet">
  <script src="../bootstrap-5.1.3-dist/js/bootstrap.bundle.min.js"></script>
</head>

<body class="container">
  <h3 align="center">小的旋转器</h3>
  <div class="spinner-border spinner-border-sm"></div>
  <div class="spinner-grow spinner-grow-sm  ml-5"></div>
  <hr />
  <h2 align="center">大的旋转器</h2>
  <div class="spinner-border" style="width: 3rem; height: 3rem;"></div>
  <div class="spinner-grow ml-5" style="width: 3rem; height: 3rem;"></div>
</body>

</body>

</html>